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[Wired] Physicists Broke Quantum Teleportation Record - Page 2

post #11 of 41
5/22/12 at 4:37am
Quote:
Originally Posted by Sisaroth View Post

A nice upgrade for WiFi. It says instantaneous in the article, is that really instantaneous or 100km / 300000km/s "instantanious"?

If I'm reading it right, that's what they are aiming for right now(to quote the article, they were able to teleport more than 1,100 photons in four hours, over a distance of 97 kilometers.). Basically some sort of communication across long distances without said communications technically covering those distances. I wouldn't mind being able to play games with people on the other side of the world without lag tongue.gif
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post #12 of 41
5/22/12 at 5:36am
this could be usefull for somekind of parallelisation !how?beat me!lol!
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post #13 of 41
5/22/12 at 5:40am
Really wish that the article could have been a bit more detailed about the actual work. I'm always skeptical about what articles call "quantum teleportation" and "quantum entanglement" without actually explaining the work. :/
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post #14 of 41
5/22/12 at 5:58am
Quote:
Originally Posted by Sisaroth View Post

A nice upgrade for WiFi. It says instantaneous in the article, is that really instantaneous or 100km / 300000km/s "instantanious"?

I'm pretty sure it's actual instantaneous, based upon the following assumptions:
1) It works across the entire universe and is still described as instantaneous
2) Article states that the information doesn't need to travel through space, therefore can't be intercepted. If it does not need to travel, it is not limited by the speed of light.


My question is whether the state of the photon is dependant upon observation, like the Schrodingers Cat thought experiment. The article mentioned that observing a value for vertical polarisation in one of the pair means that the other will immediately flip to horizontal polarisation. Is that to say that both photons are neither vertical or horizontally polarised until observed, much like the cat is neither dead nor alive until observed?
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post #15 of 41
5/22/12 at 7:18am
Apparently you can't send information this way.
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post #16 of 41
5/22/12 at 8:15am
Quote:
Originally Posted by [Adz] View Post

I'm pretty sure it's actual instantaneous, based upon the following assumptions:
1) It works across the entire universe and is still described as instantaneous
2) Article states that the information doesn't need to travel through space, therefore can't be intercepted. If it does not need to travel, it is not limited by the speed of light.
My question is whether the state of the photon is dependant upon observation, like the Schrodingers Cat thought experiment. The article mentioned that observing a value for vertical polarisation in one of the pair means that the other will immediately flip to horizontal polarisation. Is that to say that both photons are neither vertical or horizontally polarised until observed, much like the cat is neither dead nor alive until observed?

If you ask me, Schrodinger was out of his mind.

I've hidden in a box before, I remember the whole thing! I was most certainly alive...

Plus, wouldn't the cat observing it's own self make it alive by default?

Bah.
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post #17 of 41
5/22/12 at 8:18am
Quote:
Originally Posted by guyladouche View Post

Really wish that the article could have been a bit more detailed about the actual work. I'm always skeptical about what articles call "quantum teleportation" and "quantum entanglement" without actually explaining the work. :/


quantum entanglement has already been proven.

You divide 2 protons.


Move them apart as far as you want, when you do something to one of them, something happens to the other at the exact same time with no delay.
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post #18 of 41
5/22/12 at 8:47am
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Originally Posted by finalturismo View Post

quantum entanglement has already been proven.
You divide 2 protons.
Move them apart as far as you want, when you do something to one of them, something happens to the other at the exact same time with no delay.

Oh, yeah, I know that--I just find a huge disparity between what articles discuss as quantum "entanglement" and what quantum entanglement is. I don't recall the source off the top of my head, but there was a story recently in the news section where the article was talking about using quantum entanglement for communicating info, when really it wasn't entanglement at all, just using quantum states (no entanglement)--big difference. Anyhoo, I guess all I really wanted was a bit more discussion of the work the researchers did. smile.gif
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post #19 of 41
5/22/12 at 12:02pm
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Originally Posted by SectorNine50 View Post

If you ask me, Schrodinger was out of his mind.
I've hidden in a box before, I remember the whole thing! I was most certainly alive...
Plus, wouldn't the cat observing it's own self make it alive by default?
Bah.

In his defence, Schrodinger thought it was insane too. He used it as an example to make a mockery of it.
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post #20 of 41
5/22/12 at 1:08pm
Quote:
Originally Posted by [Adz] View Post

In his defence, Schrodinger thought it was insane too. He used it as an example to make a mockery of it.
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